A 24-valve M20

[stonea]

I'll like to add that during passed conversations Federico said that "250K for further development before 100% completion was needed".

That's a 100 of us at $2500 ea.

Perhaps value assessed from original expected sales figures.

In any event, the meltdown was real, from heads casting molds to valve covers and rigs for headers, everything.
RD's unequal passion and love for motoring can bring them back, all they need is a commitment from the community and maybe ...
a good 3d printer ;)

Mahalo.

Aloha.

I would definitely be down. $2,500 isn't even that bad of a price, hell a Stage 3 M20 head from VAC is $2,599. I doubt you'd find 99 other people to jump in, AND go through with it though.

[digger]

and oem dual valve pistons, instead of e36 units ?

you'd probably want 4 valve cutouts on the pistons lol

I would definitely be down. $2,500 isn't even that bad of a price, hell a Stage 3 M20 head from VAC is $2,599. I doubt you'd find 99 other people to jump in, AND go through with it though.

you'd hope it didn't turn out like the recent RD headers which are nowhere near as good as the originals.....

It still uses the stock intake and exhaust by looks of it (id hope not) which may introduce constraints that limit the port layout effectiveness compared to more modern designs. if it doesnt then its no chance in hell of it being 2500 otherwise where do i pay?

I’d say the biggest impediment to power on the m20 is the intake manifold, IMO you’ll find the intakes limits before you reach that of the head once you add a little cam into it and massage it with a die grinder. There isn’t much you can do to the stock intake to improve it either except throw it in the bin. So youd need to do this with the 24V version to

Then the fact that you'd have difficulty getting different cam profiles, it wouldn't have any vanos system, it’s a 1980’s 4V design so its probably going to be inferior to more modern engines.

[jeffnhiscars]

My read of this is....$250k for "R&D" does not include the cost to produce 100 heads but gets you production ready.

[LJ851]

Agree 100% with digger.


I'd rather see an aluminum M20 block than something that bmw effectively already designed and produced in large quantities.

[fporro]

My conversation with RD about 24V heads were brief but I'll enquire further while placing 2nd group buy of headers.

I'm not the most technical e30 guy, so how about you guys making a list so I can inquire about those things instead.

Was told "they needed further development at about 250K"
As far as price, I just divided 250K by 100 units, (75 = $3333 and 50 = 5000 ea)

Aloha :)

[jeffnhiscars]

My conversation with RD about 24V heads were brief but I'll enquire further while placing 2nd group buy of headers.

I'm not the most technical e30 guy, so how about you guys making a list so I can inquire about those things instead.

Was told "they needed further development at about 250K"
As far as price, I just divided 250K by 100 units, (75 = $3333 and 50 = 5000 ea)

Aloha :)

That's reinforces my belief that $250k don't buy a head. You really want to ask before long

[digger]

My read of this is....$250k for "R&D" does not include the cost to produce 100 heads but gets you production ready.

i think you're right, but if people came in as investors usually they get a share of profits

its never going to happen so just a bit of fun really. maybe 10-15 years ago was the time if ever

[stonea]

Agree 100% with digger.


I'd rather see an aluminum M20 block than something that bmw effectively already designed and produced in large quantities.

I would kill for an aluminum block M20, I know theres a company that CNC's blocks for Muscle Car guys.

[plotfi]

put me on list

98 more people to go!

I would definitely be down. $2,500 isn't even that bad of a price, hell a Stage 3 M20 head from VAC is $2,599. I doubt you'd find 99 other people to jump in, AND go through with it though.

[digger]

I would kill for an aluminum block M20, I know theres a company that CNC's blocks for Muscle Car guys.

really? you'd probably save 15-20kg and introduce a whole bunch of potential issues. atleast with a new 24V head you can make alot more power if its done correctly

[nando]

better off using an M54 or N52 that's already an alloy block from the factory. a custom billet block would cost a fortune..

[digger]

better off using an M54 or N52 that's already an alloy block from the factory. a custom billet block would cost a fortune..

not to mention its been engineered with an R&D budget of millions, not just made by someone who happens to have CAD, and a CNC and big lump of alloy

[akorcovelos]

As seen in the video poster earlier, people have put 24v heads on m20's, usually because the class they race in has only one restriction in engine modification, you keep the stock block.

In all reality a properly built 12v head and supporting engine mods will produce more power than the e30 chassis can make use of, but it would still be damn cool to find an old ragged out e30 in some barn and find it has the unicorn RD 24v head on it.

[Kevinl]

That RD head looks like an m50 head with the 4 bolt oval exhaust ports

[mr2peak]

Rumor has it that BMW purchased the RD heads, and that was the basis for the M5x motors